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  • American Association for the Advancement of Science (AAAS)  (3,739)
  • International Union of Crystallography (IUCr)  (2,660)
  • 1995-1999  (3,643)
  • 1980-1984  (2,756)
  • 1940-1944
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  • 1
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: Above its critical point, carbon dioxide forms a super-critical fluid, which promises to be an environmentally responsible replacement for the organic solvents traditionally used in polymerizations. Many lipophilic polymers such as polystyrene (PS) are insoluble in CO2, though polymerizations may be accomplished via the use of PS-fluoropolymer stabilizers, which act as emulsifying agents. Small-angle neutron and X-ray scattering have been used to show that these molecules form micelles with a CO2-phobic PS core and a CO2-philic fluoropolymer corona. When the PS block was fixed in length and the fluorinated corona block was varied, the number of block copolymer molecules per micelle (six to seven) remained constant. Thus, the coronal block molecular weight exerts negligible influence on the aggregation number, in accordance with the theoretical predictions of Halperin, Tirrell & Lodge [Adv. Polym. Sci. (1992), 100, 31–46]. These observations are relevant to understanding the mechanisms of micellization and solubilization in supercritical fluids.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 1996-10-25
    Description: The human genome is thought to harbor 50,000 to 100,000 genes, of which about half have been sampled to date in the form of expressed sequence tags. An international consortium was organized to develop and map gene-based sequence tagged site markers on a set of two radiation hybrid panels and a yeast artificial chromosome library. More than 16,000 human genes have been mapped relative to a framework map that contains about 1000 polymorphic genetic markers. The gene map unifies the existing genetic and physical maps with the nucleotide and protein sequence databases in a fashion that should speed the discovery of genes underlying inherited human disease. The integrated resource is available through a site on the World Wide Web at http://www.ncbi.nlm.nih.gov/SCIENCE96/.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schuler, G D -- Boguski, M S -- Stewart, E A -- Stein, L D -- Gyapay, G -- Rice, K -- White, R E -- Rodriguez-Tome, P -- Aggarwal, A -- Bajorek, E -- Bentolila, S -- Birren, B B -- Butler, A -- Castle, A B -- Chiannilkulchai, N -- Chu, A -- Clee, C -- Cowles, S -- Day, P J -- Dibling, T -- Drouot, N -- Dunham, I -- Duprat, S -- East, C -- Edwards, C -- Fan, J B -- Fang, N -- Fizames, C -- Garrett, C -- Green, L -- Hadley, D -- Harris, M -- Harrison, P -- Brady, S -- Hicks, A -- Holloway, E -- Hui, L -- Hussain, S -- Louis-Dit-Sully, C -- Ma, J -- MacGilvery, A -- Mader, C -- Maratukulam, A -- Matise, T C -- McKusick, K B -- Morissette, J -- Mungall, A -- Muselet, D -- Nusbaum, H C -- Page, D C -- Peck, A -- Perkins, S -- Piercy, M -- Qin, F -- Quackenbush, J -- Ranby, S -- Reif, T -- Rozen, S -- Sanders, C -- She, X -- Silva, J -- Slonim, D K -- Soderlund, C -- Sun, W L -- Tabar, P -- Thangarajah, T -- Vega-Czarny, N -- Vollrath, D -- Voyticky, S -- Wilmer, T -- Wu, X -- Adams, M D -- Auffray, C -- Walter, N A -- Brandon, R -- Dehejia, A -- Goodfellow, P N -- Houlgatte, R -- Hudson, J R Jr -- Ide, S E -- Iorio, K R -- Lee, W Y -- Seki, N -- Nagase, T -- Ishikawa, K -- Nomura, N -- Phillips, C -- Polymeropoulos, M H -- Sandusky, M -- Schmitt, K -- Berry, R -- Swanson, K -- Torres, R -- Venter, J C -- Sikela, J M -- Beckmann, J S -- Weissenbach, J -- Myers, R M -- Cox, D R -- James, M R -- Bentley, D -- Deloukas, P -- Lander, E S -- Hudson, T J -- HG00098/HG/NHGRI NIH HHS/ -- HG00206/HG/NHGRI NIH HHS/ -- HG00835/HG/NHGRI NIH HHS/ -- Wellcome Trust/United Kingdom -- etc. -- New York, N.Y. -- Science. 1996 Oct 25;274(5287):540-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, 8600 Rockville Pike, Bethesda, MD 20894, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8849440" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cell Line ; *Chromosome Mapping ; Chromosomes, Artificial, Yeast ; Computer Communication Networks ; DNA, Complementary/genetics ; Databases, Factual ; Gene Expression ; Genetic Markers ; *Genome, Human ; *Human Genome Project ; Humans ; Multigene Family ; RNA, Messenger/genetics ; Sequence Homology, Nucleic Acid ; Sequence Tagged Sites
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: We have synthesized a series of non-macrocyclic ligands to FKBP12 that are comparable in binding potency and peptidyl prolyl isomerase (PPIase) inhibition to FK506 itself. We have also solved the structure of one of these ligands in complex with FKBP12, and have compared that structure to the FK506–FKBP12 complex. Consistent with the observed inhibitory equipotency of these compounds, we observe a strong similarity in the conformation of the two ligands in the region of the protein that mediates PPIase activity. Our compounds, however, are not immunosuppressive. In the FKBP12–FK506 complex, a significant portion of the FK506 ligand, its `effector domain', projects beyond the envelope of the binding protein in a manner that is suggestive of a potential interaction with a second protein, the calcium-dependent phosphatase, calcineurin, whose inhibition by the FKBP 12–FK506 complex interrupts the T-cell activation events leading to immunosuppression. In contrast, our compounds bind within the surface envelope of FKBP12, and induce significant changes in the structure of the FKBP12 protein which may also affect calcineurin binding indirectly.
    Type of Medium: Electronic Resource
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  • 4
    Publication Date: 1998-10-23
    Description: A map of 30,181 human gene-based markers was assembled and integrated with the current genetic map by radiation hybrid mapping. The new gene map contains nearly twice as many genes as the previous release, includes most genes that encode proteins of known function, and is twofold to threefold more accurate than the previous version. A redesigned, more informative and functional World Wide Web site (www.ncbi.nlm.nih.gov/genemap) provides the mapping information and associated data and annotations. This resource constitutes an important infrastructure and tool for the study of complex genetic traits, the positional cloning of disease genes, the cross-referencing of mammalian genomes, and validated human transcribed sequences for large-scale studies of gene expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Deloukas, P -- Schuler, G D -- Gyapay, G -- Beasley, E M -- Soderlund, C -- Rodriguez-Tome, P -- Hui, L -- Matise, T C -- McKusick, K B -- Beckmann, J S -- Bentolila, S -- Bihoreau, M -- Birren, B B -- Browne, J -- Butler, A -- Castle, A B -- Chiannilkulchai, N -- Clee, C -- Day, P J -- Dehejia, A -- Dibling, T -- Drouot, N -- Duprat, S -- Fizames, C -- Fox, S -- Gelling, S -- Green, L -- Harrison, P -- Hocking, R -- Holloway, E -- Hunt, S -- Keil, S -- Lijnzaad, P -- Louis-Dit-Sully, C -- Ma, J -- Mendis, A -- Miller, J -- Morissette, J -- Muselet, D -- Nusbaum, H C -- Peck, A -- Rozen, S -- Simon, D -- Slonim, D K -- Staples, R -- Stein, L D -- Stewart, E A -- Suchard, M A -- Thangarajah, T -- Vega-Czarny, N -- Webber, C -- Wu, X -- Hudson, J -- Auffray, C -- Nomura, N -- Sikela, J M -- Polymeropoulos, M H -- James, M R -- Lander, E S -- Hudson, T J -- Myers, R M -- Cox, D R -- Weissenbach, J -- Boguski, M S -- Bentley, D R -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 1998 Oct 23;282(5389):744-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Sanger Centre, Hinxton Hall, Hinxton, Cambridge CB10 1SA UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9784132" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromosomes, Human/*genetics ; Expressed Sequence Tags ; Gene Expression ; Genetic Markers ; *Genome, Human ; Human Genome Project ; Humans ; Internet ; *Physical Chromosome Mapping ; Rats ; Sequence Tagged Sites
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 1996-08-16
    Description: Small synthetic molecules termed growth hormone secretagogues (GHSs) act on the pituitary gland and the hypothalamus to stimulate and amplify pulsatile growth hormone (GH) release. A heterotrimeric GTP-binding protein (G protein)-coupled receptor (GPC-R) of the pituitary and arcuate ventro-medial and infundibular hypothalamus of swine and humans was cloned and was shown to be the target of the GHSs. On the basis of its pharmacological and molecular characterization, this GPC-R defines a neuroendocrine pathway for the control of pulsatile GH release and supports the notion that the GHSs mimic an undiscovered hormone.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Howard, A D -- Feighner, S D -- Cully, D F -- Arena, J P -- Liberator, P A -- Rosenblum, C I -- Hamelin, M -- Hreniuk, D L -- Palyha, O C -- Anderson, J -- Paress, P S -- Diaz, C -- Chou, M -- Liu, K K -- McKee, K K -- Pong, S S -- Chaung, L Y -- Elbrecht, A -- Dashkevicz, M -- Heavens, R -- Rigby, M -- Sirinathsinghji, D J -- Dean, D C -- Melillo, D G -- Patchett, A A -- Nargund, R -- Griffin, P R -- DeMartino, J A -- Gupta, S K -- Schaeffer, J M -- Smith, R G -- Van der Ploeg, L H -- New York, N.Y. -- Science. 1996 Aug 16;273(5277):974-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Merck Research Laboratories, Rahway, NJ 07065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8688086" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cell Line ; Codon ; DNA, Complementary/genetics ; GTP-Binding Proteins/metabolism ; Growth Hormone/*secretion ; Hormones/*metabolism ; Humans ; Hypothalamus, Middle/chemistry ; Indoles/*metabolism/pharmacology ; Macaca mulatta ; Molecular Sequence Data ; Oligopeptides/*metabolism ; Pituitary Gland/chemistry ; RNA, Complementary/genetics ; Rats ; Receptors, Cell Surface/analysis/chemistry/genetics/*metabolism ; *Receptors, G-Protein-Coupled ; Receptors, Ghrelin ; Spiro Compounds/*metabolism/pharmacology ; Swine
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 29 (1996), S. 469-470 
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: Modifications are described that eliminate ice build-up during data collection from cryo-cooled protein crystals using an RAXIS IIC imaging-plate system and its associated cool nitrogen gas stream apparatus (both supplied by Molecular Structure Corporation, The Woodlands, Texas, USA).
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  • 7
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 38 (1982), S. 2267-2269 
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
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  • 8
    Electronic Resource
    Electronic Resource
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 55 (1999), S. 178-187 
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The electron microscope provides an ideal environment for the structural analysis of small volumes of amorphous and polycrystalline materials by enabling the collection of scattering information as a function of energy loss and momentum transfer. The scattered intensity at zero energy loss can be readily processed to a reduced density function, providing information on nearest-neighbour distances and bond angles. A method for collecting and processing the scattered intensity, which allows for the collection of an energy-loss spectrum for a range of momentum transfers, is discussed. A detailed structural determination from a reduced density function alone is difficult and it is shown that a more detailed structural model can be obtained by combining the experimental reduced density function with model structures obtained from molecular dynamics based on first-principles quantum mechanics. This method is applied to tetrahedral amorphous carbon, as an example of a monatomic network, and to aluminium nitride, as a prototype for a binary amorphous alloy.
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  • 9
    Electronic Resource
    Electronic Resource
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 40 (1984), S. 348-350 
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
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  • 10
    Publication Date: 1999-07-27
    Description: Observations of near-Earth asteroid 1998 KY26 shortly after its discovery reveal a slightly elongated spheroid with a diameter of about 30 meters, a composition analogous to carbonaceous chondritic meteorites, and a rotation period of 10.7 minutes, which is an order of magnitude shorter than that measured for any other solar system object. The rotation is too rapid for 1998 KY26 to consist of multiple components bound together just by their mutual gravitational attraction. This monolithic object probably is a fragment derived from cratering or collisional destruction of a much larger asteroid.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ostro -- Pravec -- Benner -- Hudson -- Sarounova -- Hicks -- Rabinowitz -- Scotti -- Tholen -- Wolf -- Jurgens -- Thomas -- Giorgini -- Chodas -- Yeomans -- Rose -- Frye -- Rosema -- Winkler -- Slade -- New York, N.Y. -- Science. 1999 Jul 23;285(5427):557-60.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109-8099, USA. Astronomical Institute, Academy of Sciences of the Czech Republic, CZ-25165 Ond&rbreve;ejov, Czech Republic. School of Electrical Engineering and.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10417379" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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